Rv: Re: [ RadSafe ] Suggestion about timming for first responder wearing protective mask/cloth

Ana castellanos acastella2003 at yahoo.com.ar
Mon Sep 18 18:07:25 CDT 2006

For respiratory purposes, you could contact 3M, or your provider, because what is important, is the protection factor the mask gives.
  For semi-masks, like COMFO II(MSA), the manufacturer say that with the mask correctly used, the Protection Factor is 10 ( relationship between the environment concentration and concentration that worker breaths).
  For complete face masks, this factor is 100.
  I hope this helps.

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